The Raintrace Hunting Grounds are the last and most westerly hunting grounds that players will visit in Horizon Forbidden West. The three trials there are also the most challenging that the game has to offer, though the completion rewards on offer definitely make up for this. Players can get their hands on some rare and valuable items, not to mention a few thousand Metal Shards. Of course, as with other hunting grounds in the game, doing so will require getting Full Stripes for each and every trial.